onnx-tf convert -i ./inference_model/onnx/cls/model.onnx -o ./inference_model/tf/cls
onnx-tf convert -i ./inference_model/onnx/det_db/model.onnx -o ./inference_model/tf/det_db
onnx-tf convert -i ./inference_model/onnx/rec_crnn/model.onnx -o ./inference_model/tf/rec_crnn

